Similar to the sequential input of an RNN, its output can be sequential too. In [1]}, the authors investigated whether their multiple-input multiple-output (MIMO) LSTM was more accurate than a multiple-input single-output (MISO) one. They found that the MIMO model was more accurate. Similar findings were reported in [2]}, where a MIMO model was more accurate than a single-input single-output (SISO) LSTM.
